OFFSET
1,2
COMMENTS
Column 2 of A263939.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=7
..0....2....0....0....0....0....1....0....0....1....2....0....0....1....0....0
..2....0....2....3....1....3....0....2....3....2....0....1....1....3....1....1
..3....1....1....1....2....1....3....1....1....0....3....3....2....0....2....4
..1....3....4....2....3....2....2....3....2....3....1....2....5....2....5....2
..4....4....5....4....4....4....4....6....5....4....4....6....3....4....4....5
..5....6....3....5....6....6....6....4....4....6....5....4....4....5....3....3
..6....5....6....6....5....5....5....5....6....5....6....5....6....6....6....6
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 30 2015
STATUS
approved